Midterm Solutions 2007

# Midterm Solutions 2007 - s I t'hto S \$'i*J nr I SJ'hu'r 9cl...

This preview shows pages 1–3. Sign up to view the full content.

I t'hto s nr I SJ'hu''r 9cl rl L czo-l ; S \$'i*J { C1h,.tcr ildh'Pt f .u^ " f"tr" tft *ro. orroJ c.^, Tcrl-c- + tu1 =tul\$ *T * 5<a Aevl +1.n (o.j',t t^, E= Lutt .Tr"Z.1- T 7 *vt a- ( "lu'.-^ F"tih'-) l?-f = I* = l;F ..!jl c4 lC /V1q .rltacl e - | - ttfrt Lr?- - f, truD c h n F hdL,L l : (-rL fix4l- ro.J ,-,F. cr,rr1J,r ,-h b.J- e^t "{ t t -* e ' - { ^ " t * L ' f r p ' | , , o n - h , ? ^ ^ a - = t . r y F , ? - s ? d _ t Y l I-1 '^ - It.lA..l-z .. A!a* c0^ rti' | ! f = Iru {=mto. :. AJ - +ut1 ..F tpC^J go;,^f 7 2 ' r + h,rnr,-=u^1 + ct-zftl J"lt\ , Vg'- ur' -- Lax + UI =G3 t.)t' Lo..^." U q*ntt- L &Jl^A" =) I= ,*tTT(;rC') \-/ | v I I l " a '1 4 il,J D lrh,. +l*tU sg.r^I a\ {rt.,h'o^^( Lur* o,*t ,-JA \$rn yN It ,..,l t 't e" Lrie{ k-- h't A ? " : f n t l U = A 4 = f r = ) V x = # d t r - - - r Y * - ' T v r J" ry (ro' L^^ (tt\*trA.s) 5c ) = ,!. 3 1 + / x = @ lv ou

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Problem 2a. The disk has mass M, ffi to avoid confusion, let the rocket have mass rn(t) such that m(0) - M. We take the fuel speed u with respect to the rocket to be a positive quantity (unlike K&K). The moment of inertia of the disk and rocket system about the post is 1 1(r) - ;r*'+m(t)R2 . At a time t, the disk and rocket have angular momentum L(t) - /(t)c..'(t). To be consistent with the diagram, the angular momentum points out of the page.
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern